text: // SPDX-License-Identifier: GPL-2.0
  /******************************************************************************
   *
   * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
   *
   ******************************************************************************/
  #define _RTW_EFUSE_C_
  
  #include <osdep_service.h>
  #include <drv_types.h>
  #include <rtw_efuse.h>
  #include <usb_ops_linux.h>
  #include <rtl8188e_hal.h>
  #include <rtw_iol.h>
  
  #define REG_EFUSE_CTRL		0x0030
  #define EFUSE_CTRL			REG_EFUSE_CTRL		/*  E-Fuse Control. */
  
  enum{
  		VOLTAGE_V25						= 0x03,
  		LDOE25_SHIFT						= 28,
  	};
  
  /*
   * When we want to enable write operation, we should change to pwr on state.
   * When we stop write, we should switch to 500k mode and disable LDO 2.5V.
   */
  void efuse_power_switch(struct adapter *pAdapter, u8 write, u8 pwrstate)
  {
  	u8 tempval;
  	u16 tmpv16;
  
  	if (pwrstate) {
  		usb_write8(pAdapter, REG_EFUSE_ACCESS, EFUSE_ACCESS_ON);
  
  		/*  1.2V Power: From VDDON with Power Cut(0x0000h[15]), default valid */
  		tmpv16 = usb_read16(pAdapter, REG_SYS_ISO_CTRL);
  		if (!(tmpv16 & PWC_EV12V)) {
  			tmpv16 |= PWC_EV12V;
  			usb_write16(pAdapter, REG_SYS_ISO_CTRL, tmpv16);
  		}
  		/*  Reset: 0x0000h[28], default valid */
  		tmpv16 =  usb_read16(pAdapter, REG_SYS_FUNC_EN);
  		if (!(tmpv16 & FEN_ELDR)) {
  			tmpv16 |= FEN_ELDR;
  			usb_write16(pAdapter, REG_SYS_FUNC_EN, tmpv16);
  		}
  
  		/*  Clock: Gated(0x0008h[5]) 8M(0x0008h[1]) clock from ANA, default valid */
  		tmpv16 = usb_read16(pAdapter, REG_SYS_CLKR);
  		if ((!(tmpv16 & LOADER_CLK_EN))  || (!(tmpv16 & ANA8M))) {
  			tmpv16 |= (LOADER_CLK_EN | ANA8M);
  			usb_write16(pAdapter, REG_SYS_CLKR, tmpv16);
  		}
  
  		if (write) {
  			/*  Enable LDO 2.5V before read/write action */
  			tempval = usb_read8(pAdapter, EFUSE_TEST + 3);
  			tempval &= 0x0F;
  			tempval |= (VOLTAGE_V25 << 4);
  			usb_write8(pAdapter, EFUSE_TEST + 3, (tempval | 0x80));
  		}
  	} else {
  		usb_write8(pAdapter, REG_EFUSE_ACCESS, EFUSE_ACCESS_OFF);
  
  		if (write) {
  			/*  Disable LDO 2.5V after read/write action */
  			tempval = usb_read8(pAdapter, EFUSE_TEST + 3);
  			usb_write8(pAdapter, EFUSE_TEST + 3, (tempval & 0x7F));
  		}
  	}
  }
  
  static void
  efuse_phymap_to_logical(u8 *phymap, u16 _offset, u16 _size_byte, u8  *pbuf)
  {
  	u8 *efuseTbl = NULL;
  	u8 rtemp8;
  	u16	eFuse_Addr = 0;
  	u8 offset, wren;
  	u16	i, j;
  	u16	**eFuseWord = NULL;
  	u16	efuse_utilized = 0;
  	u8 u1temp = 0;
  	void **tmp = NULL;
  
  	efuseTbl = kzalloc(EFUSE_MAP_LEN_88E, GFP_KERNEL);
  	if (!efuseTbl)
  		return;
  
  	tmp = kzalloc(EFUSE_MAX_SECTION_88E * (sizeof(void *) + EFUSE_MAX_WORD_UNIT * sizeof(u16)), GFP_KERNEL);
  	if (!tmp) {
  		DBG_88E("%s: alloc eFuseWord fail!\n", __func__);
  		goto eFuseWord_failed;
  	}
  	for (i = 0; i < EFUSE_MAX_SECTION_88E; i++)
  		tmp[i] = ((char *)(tmp + EFUSE_MAX_SECTION_88E)) + i * EFUSE_MAX_WORD_UNIT * sizeof(u16);
  	eFuseWord = (u16 **)tmp;
  
  	/*  0. Refresh efuse init map as all oxFF. */
  	for (i = 0; i < EFUSE_MAX_SECTION_88E; i++)
  		for (j = 0; j < EFUSE_MAX_WORD_UNIT; j++)
  			eFuseWord[i][j] = 0xFFFF;
  
  	/*  */
  	/*  1. Read the first byte to check if efuse is empty!!! */
  	/*  */
  	/*  */
  	rtemp8 = *(phymap+eFuse_Addr);
  	if (rtemp8 != 0xFF) {
  		efuse_utilized++;
  		eFuse_Addr++;
  	} else {
  		DBG_88E("EFUSE is empty efuse_Addr-%d efuse_data =%x\n", eFuse_Addr, rtemp8);
  		goto exit;
  	}
  
  	/*  */
  	/*  2. Read real efuse content. Filter PG header and every section data. */
  	/*  */
  	while ((rtemp8 != 0xFF) && (eFuse_Addr < EFUSE_REAL_CONTENT_LEN_88E)) {
  		/*  Check PG header for section num. */
  		if ((rtemp8 & 0x1F) == 0x0F) {		/* extended header */
  			u1temp = (rtemp8 & 0xE0) >> 5;
  			rtemp8 = *(phymap+eFuse_Addr);
  			if ((rtemp8 & 0x0F) == 0x0F) {
  				eFuse_Addr++;
  				rtemp8 = *(phymap+eFuse_Addr);
  
  				if (rtemp8 != 0xFF && (eFuse_Addr < EFUSE_REAL_CONTENT_LEN_88E))
  					eFuse_Addr++;
  				continue;
  			} else {
  				offset = ((rtemp8 & 0xF0) >> 1) | u1temp;
  				wren = rtemp8 & 0x0F;
  				eFuse_Addr++;
  			}
  		} else {
  			offset = (rtemp8 >> 4) & 0x0f;
  			wren = rtemp8 & 0x0f;
  		}
  
  		if (offset < EFUSE_MAX_SECTION_88E) {
  			/*  Get word enable value from PG header */
  			for (i = 0; i < EFUSE_MAX_WORD_UNIT; i++) {
  				/*  Check word enable condition in the section */
  				if (!(wren & 0x01)) {
  					rtemp8 = *(phymap+eFuse_Addr);
  					eFuse_Addr++;
  					efuse_utilized++;
  					eFuseWord[offset][i] = (rtemp8 & 0xff);
  					if (eFuse_Addr >= EFUSE_REAL_CONTENT_LEN_88E)
  						break;
  					rtemp8 = *(phymap+eFuse_Addr);
  					eFuse_Addr++;
  					efuse_utilized++;
  					eFuseWord[offset][i] |= (((u16)rtemp8 << 8) & 0xff00);
  
  					if (eFuse_Addr >= EFUSE_REAL_CONTENT_LEN_88E)
  						break;
  				}
  				wren >>= 1;
  			}
  		}
  		/*  Read next PG header */
  		rtemp8 = *(phymap+eFuse_Addr);
  
  		if (rtemp8 != 0xFF && (eFuse_Addr < EFUSE_REAL_CONTENT_LEN_88E)) {
  			efuse_utilized++;
  			eFuse_Addr++;
  		}
  	}
  
  	/*  */
  	/*  3. Collect 16 sections and 4 word unit into Efuse map. */
  	/*  */
  	for (i = 0; i < EFUSE_MAX_SECTION_88E; i++) {
  		for (j = 0; j < EFUSE_MAX_WORD_UNIT; j++) {
  			efuseTbl[(i*8)+(j*2)] = (eFuseWord[i][j] & 0xff);
  			efuseTbl[(i*8)+((j*2)+1)] = ((eFuseWord[i][j] >> 8) & 0xff);
  		}
  	}
  
  	/*  */
  	/*  4. Copy from Efuse map to output pointer memory!!! */
  	/*  */
  	for (i = 0; i < _size_byte; i++)
  		pbuf[i] = efuseTbl[_offset+i];
  
  	/*  */
  	/*  5. Calculate Efuse utilization. */
  	/*  */
  
  exit:
  	kfree(eFuseWord);
  
  eFuseWord_failed:
  	kfree(efuseTbl);
  }
  
  static void efuse_read_phymap_from_txpktbuf(
  	struct adapter  *adapter,
  	int bcnhead,	/* beacon head, where FW store len(2-byte) and efuse physical map. */
  	u8 *content,	/* buffer to store efuse physical map */
  	u16 *size	/* for efuse content: the max byte to read. will update to byte read */
  	)
  {
  	u16 dbg_addr = 0;
  	unsigned long start = 0;
  	u8 reg_0x143 = 0;
  	u32 lo32 = 0, hi32 = 0;
  	u16 len = 0, count = 0;
  	int i = 0;
  	u16 limit = *size;
  
  	u8 *pos = content;
  
  	if (bcnhead < 0) /* if not valid */
  		bcnhead = usb_read8(adapter, REG_TDECTRL+1);
  
  	DBG_88E("%s bcnhead:%d\n", __func__, bcnhead);
  
  	usb_write8(adapter, REG_PKT_BUFF_ACCESS_CTRL, TXPKT_BUF_SELECT);
  
  	dbg_addr = bcnhead*128/8; /* 8-bytes addressing */
  
  	while (1) {
  		usb_write16(adapter, REG_PKTBUF_DBG_ADDR, dbg_addr+i);
  
  		usb_write8(adapter, REG_TXPKTBUF_DBG, 0);
  		start = jiffies;
  		while (!(reg_0x143 = usb_read8(adapter, REG_TXPKTBUF_DBG)) &&
  		       jiffies_to_msecs(jiffies - start) < 1000) {
  			DBG_88E("%s polling reg_0x143:0x%02x, reg_0x106:0x%02x\n", __func__, reg_0x143, usb_read8(adapter, 0x106));
  			usleep_range(1000, 2000);
  		}
  
  		lo32 = usb_read32(adapter, REG_PKTBUF_DBG_DATA_L);
  		hi32 = usb_read32(adapter, REG_PKTBUF_DBG_DATA_H);
  
  		if (i == 0) {
  			u8 lenc[2];
  			u16 lenbak, aaabak;
  			u16 aaa;
  
  			lenc[0] = usb_read8(adapter, REG_PKTBUF_DBG_DATA_L);
  			lenc[1] = usb_read8(adapter, REG_PKTBUF_DBG_DATA_L+1);
  
  			aaabak = le16_to_cpup((__le16 *)lenc);
  			lenbak = le16_to_cpu(*((__le16 *)lenc));
  			aaa = le16_to_cpup((__le16 *)&lo32);
  			len = le16_to_cpu(*((__le16 *)&lo32));
  
  			limit = min_t(u16, len-2, limit);
  
  			DBG_88E("%s len:%u, lenbak:%u, aaa:%u, aaabak:%u\n", __func__, len, lenbak, aaa, aaabak);
  
  			memcpy(pos, ((u8 *)&lo32)+2, (limit >= count+2) ? 2 : limit-count);
  			count += (limit >= count+2) ? 2 : limit-count;
  			pos = content+count;
  
  		} else {
  			memcpy(pos, ((u8 *)&lo32), (limit >= count+4) ? 4 : limit-count);
  			count += (limit >= count+4) ? 4 : limit-count;
  			pos = content+count;
  		}
  
  		if (limit > count && len-2 > count) {
  			memcpy(pos, (u8 *)&hi32, (limit >= count+4) ? 4 : limit-count);
  			count += (limit >= count+4) ? 4 : limit-count;
  			pos = content+count;
  		}
  
  		if (limit <= count || len-2 <= count)
  			break;
  		i++;
  	}
  	usb_write8(adapter, REG_PKT_BUFF_ACCESS_CTRL, DISABLE_TRXPKT_BUF_ACCESS);
  	DBG_88E("%s read count:%u\n", __func__, count);
  	*size = count;
  }
  
  static s32 iol_read_efuse(struct adapter *padapter, u8 txpktbuf_bndy, u16 offset, u16 size_byte, u8 *logical_map)
  {
  	s32 status = _FAIL;
  	u8 physical_map[512];
  	u16 size = 512;
  
  	usb_write8(padapter, REG_TDECTRL+1, txpktbuf_bndy);
  	memset(physical_map, 0xFF, 512);
  	usb_write8(padapter, REG_PKT_BUFF_ACCESS_CTRL, TXPKT_BUF_SELECT);
  	status = iol_execute(padapter, CMD_READ_EFUSE_MAP);
  	if (status == _SUCCESS)
  		efuse_read_phymap_from_txpktbuf(padapter, txpktbuf_bndy, physical_map, &size);
  	efuse_phymap_to_logical(physical_map, offset, size_byte, logical_map);
  	return status;
  }
  
  void efuse_ReadEFuse(struct adapter *Adapter, u8 efuseType, u16 _offset, u16 _size_byte, u8 *pbuf)
  {
  	if (rtw_iol_applied(Adapter)) {
  		rtw_hal_power_on(Adapter);
  		iol_mode_enable(Adapter, 1);
  		iol_read_efuse(Adapter, 0, _offset, _size_byte, pbuf);
  		iol_mode_enable(Adapter, 0);
  	}
  }
  
  u8 Efuse_WordEnableDataWrite(struct adapter *pAdapter, u16 efuse_addr, u8 word_en, u8 *data)
  {
  	u16	tmpaddr = 0;
  	u16	start_addr = efuse_addr;
  	u8 badworden = 0x0F;
  	u8 tmpdata[8];
  
  	memset(tmpdata, 0xff, PGPKT_DATA_SIZE);
  
  	if (!(word_en & BIT(0))) {
  		tmpaddr = start_addr;
  		efuse_OneByteWrite(pAdapter, start_addr++, data[0]);
  		efuse_OneByteWrite(pAdapter, start_addr++, data[1]);
  
  		efuse_OneByteRead(pAdapter, tmpaddr, &tmpdata[0]);
  		efuse_OneByteRead(pAdapter, tmpaddr+1, &tmpdata[1]);
  		if ((data[0] != tmpdata[0]) || (data[1] != tmpdata[1]))
  			badworden &= (~BIT(0));
  	}
  	if (!(word_en & BIT(1))) {
  		tmpaddr = start_addr;
  		efuse_OneByteWrite(pAdapter, start_addr++, data[2]);
  		efuse_OneByteWrite(pAdapter, start_addr++, data[3]);
  
  		efuse_OneByteRead(pAdapter, tmpaddr, &tmpdata[2]);
  		efuse_OneByteRead(pAdapter, tmpaddr+1, &tmpdata[3]);
  		if ((data[2] != tmpdata[2]) || (data[3] != tmpdata[3]))
  			badworden &= (~BIT(1));
  	}
  	if (!(word_en & BIT(2))) {
  		tmpaddr = start_addr;
  		efuse_OneByteWrite(pAdapter, start_addr++, data[4]);
  		efuse_OneByteWrite(pAdapter, start_addr++, data[5]);
  
  		efuse_OneByteRead(pAdapter, tmpaddr, &tmpdata[4]);
  		efuse_OneByteRead(pAdapter, tmpaddr+1, &tmpdata[5]);
  		if ((data[4] != tmpdata[4]) || (data[5] != tmpdata[5]))
  			badworden &= (~BIT(2));
  	}
  	if (!(word_en & BIT(3))) {
  		tmpaddr = start_addr;
  		efuse_OneByteWrite(pAdapter, start_addr++, data[6]);
  		efuse_OneByteWrite(pAdapter, start_addr++, data[7]);
  
  		efuse_OneByteRead(pAdapter, tmpaddr, &tmpdata[6]);
  		efuse_OneByteRead(pAdapter, tmpaddr+1, &tmpdata[7]);
  		if ((data[6] != tmpdata[6]) || (data[7] != tmpdata[7]))
  			badworden &= (~BIT(3));
  	}
  	return badworden;
  }
  
  static u16 Efuse_GetCurrentSize(struct adapter *pAdapter)
  {
  	u16	efuse_addr = 0;
  	u8 hoffset = 0, hworden = 0;
  	u8 efuse_data, word_cnts = 0;
  
  	rtw_hal_get_hwreg(pAdapter, HW_VAR_EFUSE_BYTES, (u8 *)&efuse_addr);
  
  	while (efuse_OneByteRead(pAdapter, efuse_addr, &efuse_data) &&
  	       AVAILABLE_EFUSE_ADDR(efuse_addr)) {
  		if (efuse_data != 0xFF) {
  			if ((efuse_data&0x1F) == 0x0F) {		/* extended header */
  				hoffset = efuse_data;
  				efuse_addr++;
  				efuse_OneByteRead(pAdapter, efuse_addr, &efuse_data);
  				if ((efuse_data & 0x0F) == 0x0F) {
  					efuse_addr++;
  					continue;
  				} else {
  					hoffset = ((hoffset & 0xE0) >> 5) | ((efuse_data & 0xF0) >> 1);
  					hworden = efuse_data & 0x0F;
  				}
  			} else {
  				hoffset = (efuse_data>>4) & 0x0F;
  				hworden =  efuse_data & 0x0F;
  			}
  			word_cnts = Efuse_CalculateWordCnts(hworden);
  			/* read next header */
  			efuse_addr = efuse_addr + (word_cnts*2)+1;
  		} else {
  			break;
  		}
  	}
  
  	rtw_hal_set_hwreg(pAdapter, HW_VAR_EFUSE_BYTES, (u8 *)&efuse_addr);
  
  	return efuse_addr;
  }
  
  int Efuse_PgPacketRead(struct adapter *pAdapter, u8 offset, u8 *data)
  {
  	u8 ReadState = PG_STATE_HEADER;
  	int	bContinual = true;
  	int	bDataEmpty = true;
  	u8 efuse_data, word_cnts = 0;
  	u16	efuse_addr = 0;
  	u8 hoffset = 0, hworden = 0;
  	u8 tmpidx = 0;
  	u8 tmpdata[8];
  	u8 tmp_header = 0;
  
  	if (!data)
  		return false;
  	if (offset > EFUSE_MAX_SECTION_88E)
  		return false;
  
  	memset(data, 0xff, sizeof(u8) * PGPKT_DATA_SIZE);
  	memset(tmpdata, 0xff, sizeof(u8) * PGPKT_DATA_SIZE);
  
  	/*  <Roger_TODO> Efuse has been pre-programmed dummy 5Bytes at the end of Efuse by CP. */
  	/*  Skip dummy parts to prevent unexpected data read from Efuse. */
  	/*  By pass right now. 2009.02.19. */
  	while (bContinual && AVAILABLE_EFUSE_ADDR(efuse_addr)) {
  		/*   Header Read ------------- */
  		if (ReadState & PG_STATE_HEADER) {
  			if (efuse_OneByteRead(pAdapter, efuse_addr, &efuse_data) && (efuse_data != 0xFF)) {
  				if (EXT_HEADER(efuse_data)) {
  					tmp_header = efuse_data;
  					efuse_addr++;
  					efuse_OneByteRead(pAdapter, efuse_addr, &efuse_data);
  					if (!ALL_WORDS_DISABLED(efuse_data)) {
  						hoffset = ((tmp_header & 0xE0) >> 5) | ((efuse_data & 0xF0) >> 1);
  						hworden = efuse_data & 0x0F;
  					} else {
  						DBG_88E("Error, All words disabled\n");
  						efuse_addr++;
  						continue;
  					}
  				} else {
  					hoffset = (efuse_data>>4) & 0x0F;
  					hworden =  efuse_data & 0x0F;
  				}
  				word_cnts = Efuse_CalculateWordCnts(hworden);
  				bDataEmpty = true;
  
  				if (hoffset == offset) {
  					for (tmpidx = 0; tmpidx < word_cnts*2; tmpidx++) {
  						if (efuse_OneByteRead(pAdapter, efuse_addr+1+tmpidx, &efuse_data)) {
  							tmpdata[tmpidx] = efuse_data;
  							if (efuse_data != 0xff)
  								bDataEmpty = false;
  						}
  					}
  					if (!bDataEmpty) {
  						ReadState = PG_STATE_DATA;
  					} else {/* read next header */
  						efuse_addr = efuse_addr + (word_cnts*2)+1;
  						ReadState = PG_STATE_HEADER;
  					}
  				} else {/* read next header */
  					efuse_addr = efuse_addr + (word_cnts*2)+1;
  					ReadState = PG_STATE_HEADER;
  				}
  			} else {
  				bContinual = false;
  			}
  		} else if (ReadState & PG_STATE_DATA) {
  			/*   Data section Read ------------- */
  			efuse_WordEnableDataRead(hworden, tmpdata, data);
  			efuse_addr = efuse_addr + (word_cnts*2)+1;
  			ReadState = PG_STATE_HEADER;
  		}
  	}
  
  	if ((data[0] == 0xff) && (data[1] == 0xff) && (data[2] == 0xff)  && (data[3] == 0xff) &&
  	    (data[4] == 0xff) && (data[5] == 0xff) && (data[6] == 0xff)  && (data[7] == 0xff))
  		return false;
  	else
  		return true;
  }
  
  static bool hal_EfuseFixHeaderProcess(struct adapter *pAdapter, u8 efuseType, struct pgpkt *pFixPkt, u16 *pAddr)
  {
  	u8 originaldata[8], badworden = 0;
  	u16	efuse_addr = *pAddr;
  	u32	PgWriteSuccess = 0;
  
  	memset(originaldata, 0xff, 8);
  
  	if (Efuse_PgPacketRead(pAdapter, pFixPkt->offset, originaldata)) {
  		/* check if data exist */
  		badworden = Efuse_WordEnableDataWrite(pAdapter, efuse_addr+1, pFixPkt->word_en, originaldata);
  
  		if (badworden != 0xf) {	/*  write fail */
  			PgWriteSuccess = Efuse_PgPacketWrite(pAdapter, pFixPkt->offset, badworden, originaldata);
  
  			if (!PgWriteSuccess)
  				return false;
  			else
  				efuse_addr = Efuse_GetCurrentSize(pAdapter);
  		} else {
  			efuse_addr = efuse_addr + (pFixPkt->word_cnts*2) + 1;
  		}
  	} else {
  		efuse_addr = efuse_addr + (pFixPkt->word_cnts*2) + 1;
  	}
  	*pAddr = efuse_addr;
  	return true;
  }
  
  static bool hal_EfusePgPacketWrite2ByteHeader(struct adapter *pAdapter, u8 efuseType, u16 *pAddr, struct pgpkt *pTargetPkt)
  {
  	bool ret = false;
  	u16 efuse_addr = *pAddr;
  	u16 efuse_max_available_len =
  		EFUSE_REAL_CONTENT_LEN_88E - EFUSE_OOB_PROTECT_BYTES_88E;
  	u8 pg_header = 0, tmp_header = 0, pg_header_temp = 0;
  	u8 repeatcnt = 0;
  
  	while (efuse_addr < efuse_max_available_len) {
  		pg_header = ((pTargetPkt->offset & 0x07) << 5) | 0x0F;
  		efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  		efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  
  		while (tmp_header == 0xFF) {
  			if (repeatcnt++ > EFUSE_REPEAT_THRESHOLD_)
  				return false;
  
  			efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  			efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  		}
  
  		/* to write ext_header */
  		if (tmp_header == pg_header) {
  			efuse_addr++;
  			pg_header_temp = pg_header;
  			pg_header = ((pTargetPkt->offset & 0x78) << 1) | pTargetPkt->word_en;
  
  			efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  			efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  
  			while (tmp_header == 0xFF) {
  				if (repeatcnt++ > EFUSE_REPEAT_THRESHOLD_)
  					return false;
  
  				efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  				efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  			}
  
  			if ((tmp_header & 0x0F) == 0x0F) {	/* word_en PG fail */
  				if (repeatcnt++ > EFUSE_REPEAT_THRESHOLD_)
  					return false;
  
  				efuse_addr++;
  				continue;
  			} else if (pg_header != tmp_header) {	/* offset PG fail */
  				struct pgpkt	fixPkt;
  
  				fixPkt.offset = ((pg_header_temp & 0xE0) >> 5) | ((tmp_header & 0xF0) >> 1);
  				fixPkt.word_en = tmp_header & 0x0F;
  				fixPkt.word_cnts = Efuse_CalculateWordCnts(fixPkt.word_en);
  				if (!hal_EfuseFixHeaderProcess(pAdapter, efuseType, &fixPkt, &efuse_addr))
  					return false;
  			} else {
  				ret = true;
  				break;
  			}
  		} else if ((tmp_header & 0x1F) == 0x0F) {		/* wrong extended header */
  			efuse_addr += 2;
  			continue;
  		}
  	}
  
  	*pAddr = efuse_addr;
  	return ret;
  }
  
  static bool hal_EfusePgPacketWrite1ByteHeader(struct adapter *pAdapter, u8 efuseType, u16 *pAddr, struct pgpkt *pTargetPkt)
  {
  	bool ret = false;
  	u8 pg_header = 0, tmp_header = 0;
  	u16	efuse_addr = *pAddr;
  	u8 repeatcnt = 0;
  
  	pg_header = ((pTargetPkt->offset << 4) & 0xf0) | pTargetPkt->word_en;
  
  	efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  	efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  
  	while (tmp_header == 0xFF) {
  		if (repeatcnt++ > EFUSE_REPEAT_THRESHOLD_)
  			return false;
  		efuse_OneByteWrite(pAdapter, efuse_addr, pg_header);
  		efuse_OneByteRead(pAdapter, efuse_addr, &tmp_header);
  	}
  
  	if (pg_header == tmp_header) {
  		ret = true;
  	} else {
  		struct pgpkt	fixPkt;
  
  		fixPkt.offset = (tmp_header>>4) & 0x0F;
  		fixPkt.word_en = tmp_header & 0x0F;
  		fixPkt.word_cnts = Efuse_CalculateWordCnts(fixPkt.word_en);
  		if (!hal_EfuseFixHeaderProcess(pAdapter, efuseType, &fixPkt, &efuse_addr))
  			return false;
  	}
  
  	*pAddr = efuse_addr;
  	return ret;
  }
  
  static bool hal_EfusePgPacketWriteData(struct adapter *pAdapter, u8 efuseType, u16 *pAddr, struct pgpkt *pTargetPkt)
  {
  	u16	efuse_addr = *pAddr;
  	u8 badworden = 0;
  	u32	PgWriteSuccess = 0;
  
  	badworden = 0x0f;
  	badworden = Efuse_WordEnableDataWrite(pAdapter, efuse_addr+1, pTargetPkt->word_en, pTargetPkt->data);
  	if (badworden == 0x0F) {
  		/*  write ok */
  		return true;
  	}
  	/* reorganize other pg packet */
  	PgWriteSuccess = Efuse_PgPacketWrite(pAdapter, pTargetPkt->offset, badworden, pTargetPkt->data);
  	if (!PgWriteSuccess)
  		return false;
  	else
  		return true;
  }
  
  static bool
  hal_EfusePgPacketWriteHeader(
  				struct adapter *pAdapter,
  				u8 efuseType,
  				u16				*pAddr,
  				struct pgpkt *pTargetPkt)
  {
  	bool ret = false;
  
  	if (pTargetPkt->offset >= EFUSE_MAX_SECTION_BASE)
  		ret = hal_EfusePgPacketWrite2ByteHeader(pAdapter, efuseType, pAddr, pTargetPkt);
  	else
  		ret = hal_EfusePgPacketWrite1ByteHeader(pAdapter, efuseType, pAddr, pTargetPkt);
  
  	return ret;
  }
  
  static bool wordEnMatched(struct pgpkt *pTargetPkt, struct pgpkt *pCurPkt,
  			  u8 *pWden)
  {
  	u8 match_word_en = 0x0F;	/*  default all words are disabled */
  
  	/*  check if the same words are enabled both target and current PG packet */
  	if (((pTargetPkt->word_en & BIT(0)) == 0) &&
  	    ((pCurPkt->word_en & BIT(0)) == 0))
  		match_word_en &= ~BIT(0);				/*  enable word 0 */
  	if (((pTargetPkt->word_en & BIT(1)) == 0) &&
  	    ((pCurPkt->word_en & BIT(1)) == 0))
  		match_word_en &= ~BIT(1);				/*  enable word 1 */
  	if (((pTargetPkt->word_en & BIT(2)) == 0) &&
  	    ((pCurPkt->word_en & BIT(2)) == 0))
  		match_word_en &= ~BIT(2);				/*  enable word 2 */
  	if (((pTargetPkt->word_en & BIT(3)) == 0) &&
  	    ((pCurPkt->word_en & BIT(3)) == 0))
  		match_word_en &= ~BIT(3);				/*  enable word 3 */
  
  	*pWden = match_word_en;
  
  	if (match_word_en != 0xf)
  		return true;
  	else
  		return false;
  }
  
  static bool hal_EfuseCheckIfDatafollowed(struct adapter *pAdapter, u8 word_cnts, u16 startAddr)
  {
  	bool ret = false;
  	u8 i, efuse_data;
  
  	for (i = 0; i < (word_cnts*2); i++) {
  		if (efuse_OneByteRead(pAdapter, (startAddr+i), &efuse_data) && (efuse_data != 0xFF))
  			ret = true;
  	}
  	return ret;
  }
  
  static bool hal_EfusePartialWriteCheck(struct adapter *pAdapter, u8 efuseType, u16 *pAddr, struct pgpkt *pTargetPkt)
  {
  	bool ret = false;
  	u8 i, efuse_data = 0, cur_header = 0;
  	u8 matched_wden = 0, badworden = 0;
  	u16 startAddr = 0;
  	u16 efuse_max_available_len =
  		EFUSE_REAL_CONTENT_LEN_88E - EFUSE_OOB_PROTECT_BYTES_88E;
  	struct pgpkt curPkt;
  
  	rtw_hal_get_hwreg(pAdapter, HW_VAR_EFUSE_BYTES, (u8 *)&startAddr);
  	startAddr %= EFUSE_REAL_CONTENT_LEN;
  
  	while (1) {
  		if (startAddr >= efuse_max_available_len) {
  			ret = false;
  			break;
  		}
  
  		if (efuse_OneByteRead(pAdapter, startAddr, &efuse_data) && (efuse_data != 0xFF)) {
  			if (EXT_HEADER(efuse_data)) {
  				cur_header = efuse_data;
  				startAddr++;
  				efuse_OneByteRead(pAdapter, startAddr, &efuse_data);
  				if (ALL_WORDS_DISABLED(efuse_data)) {
  					ret = false;
  					break;
  				} else {
  					curPkt.offset = ((cur_header & 0xE0) >> 5) | ((efuse_data & 0xF0) >> 1);
  					curPkt.word_en = efuse_data & 0x0F;
  				}
  			} else {
  				cur_header  =  efuse_data;
  				curPkt.offset = (cur_header>>4) & 0x0F;
  				curPkt.word_en = cur_header & 0x0F;
  			}
  
  			curPkt.word_cnts = Efuse_CalculateWordCnts(curPkt.word_en);
  			/*  if same header is found but no data followed */
  			/*  write some part of data followed by the header. */
  			if ((curPkt.offset == pTargetPkt->offset) &&
  			    (!hal_EfuseCheckIfDatafollowed(pAdapter, curPkt.word_cnts, startAddr+1)) &&
  			    wordEnMatched(pTargetPkt, &curPkt, &matched_wden)) {
  				/*  Here to write partial data */
  				badworden = Efuse_WordEnableDataWrite(pAdapter, startAddr+1, matched_wden, pTargetPkt->data);
  				if (badworden != 0x0F) {
  					u32	PgWriteSuccess = 0;
  					/*  if write fail on some words, write these bad words again */
  
  					PgWriteSuccess = Efuse_PgPacketWrite(pAdapter, pTargetPkt->offset, badworden, pTargetPkt->data);
  
  					if (!PgWriteSuccess) {
  						ret = false;	/*  write fail, return */
  						break;
  					}
  				}
  				/*  partial write ok, update the target packet for later use */
  				for (i = 0; i < 4; i++) {
  					if ((matched_wden & (0x1<<i)) == 0)	/*  this word has been written */
  						pTargetPkt->word_en |= (0x1<<i);	/*  disable the word */
  				}
  				pTargetPkt->word_cnts = Efuse_CalculateWordCnts(pTargetPkt->word_en);
  			}
  			/*  read from next header */
  			startAddr = startAddr + (curPkt.word_cnts*2) + 1;
  		} else {
  			/*  not used header, 0xff */
  			*pAddr = startAddr;
  			ret = true;
  			break;
  		}
  	}
  	return ret;
  }
  
  static bool
  hal_EfusePgCheckAvailableAddr(
  		struct adapter *pAdapter,
  		u8 efuseType
  	)
  {
  	if (Efuse_GetCurrentSize(pAdapter) >= EFUSE_MAP_LEN_88E)
  		return false;
  	return true;
  }
  
  static void hal_EfuseConstructPGPkt(u8 offset, u8 word_en, u8 *pData, struct pgpkt *pTargetPkt)
  {
  	memset((void *)pTargetPkt->data, 0xFF, sizeof(u8)*8);
  	pTargetPkt->offset = offset;
  	pTargetPkt->word_en = word_en;
  	efuse_WordEnableDataRead(word_en, pData, pTargetPkt->data);
  	pTargetPkt->word_cnts = Efuse_CalculateWordCnts(pTargetPkt->word_en);
  }
  
  bool Efuse_PgPacketWrite(struct adapter *pAdapter, u8 offset, u8 word_en, u8 *pData)
  {
  	struct pgpkt	targetPkt;
  	u16			startAddr = 0;
  	u8 efuseType = EFUSE_WIFI;
  
  	if (!hal_EfusePgCheckAvailableAddr(pAdapter, efuseType))
  		return false;
  
  	hal_EfuseConstructPGPkt(offset, word_en, pData, &targetPkt);
  
  	if (!hal_EfusePartialWriteCheck(pAdapter, efuseType, &startAddr, &targetPkt))
  		return false;
  
  	if (!hal_EfusePgPacketWriteHeader(pAdapter, efuseType, &startAddr, &targetPkt))
  		return false;
  
  	if (!hal_EfusePgPacketWriteData(pAdapter, efuseType, &startAddr, &targetPkt))
  		return false;
  
  	return true;
  }
  
  u8 Efuse_CalculateWordCnts(u8 word_en)
  {
  	u8 word_cnts = 0;
  
  	if (!(word_en & BIT(0)))
  		word_cnts++; /*  0 : write enable */
  	if (!(word_en & BIT(1)))
  		word_cnts++;
  	if (!(word_en & BIT(2)))
  		word_cnts++;
  	if (!(word_en & BIT(3)))
  		word_cnts++;
  	return word_cnts;
  }
  
  u8 efuse_OneByteRead(struct adapter *pAdapter, u16 addr, u8 *data)
  {
  	u8 tmpidx = 0;
  	u8 result;
  
  	usb_write8(pAdapter, EFUSE_CTRL+1, (u8)(addr & 0xff));
  	usb_write8(pAdapter, EFUSE_CTRL+2, ((u8)((addr>>8) & 0x03)) |
  		   (usb_read8(pAdapter, EFUSE_CTRL+2) & 0xFC));
  
  	usb_write8(pAdapter, EFUSE_CTRL+3,  0x72);/* read cmd */
  
  	while (!(0x80 & usb_read8(pAdapter, EFUSE_CTRL+3)) && (tmpidx < 100))
  		tmpidx++;
  	if (tmpidx < 100) {
  		*data = usb_read8(pAdapter, EFUSE_CTRL);
  		result = true;
  	} else {
  		*data = 0xff;
  		result = false;
  	}
  	return result;
  }
  
  u8 efuse_OneByteWrite(struct adapter *pAdapter, u16 addr, u8 data)
  {
  	u8 tmpidx = 0;
  	u8 result;
  
  	usb_write8(pAdapter, EFUSE_CTRL+1, (u8)(addr&0xff));
  	usb_write8(pAdapter, EFUSE_CTRL+2,
  		   (usb_read8(pAdapter, EFUSE_CTRL+2) & 0xFC) |
  		   (u8)((addr>>8) & 0x03));
  	usb_write8(pAdapter, EFUSE_CTRL, data);/* data */
  
  	usb_write8(pAdapter, EFUSE_CTRL+3, 0xF2);/* write cmd */
  
  	while ((0x80 &  usb_read8(pAdapter, EFUSE_CTRL+3)) && (tmpidx < 100))
  		tmpidx++;
  
  	if (tmpidx < 100)
  		result = true;
  	else
  		result = false;
  
  	return result;
  }
  
  /* Read allowed word in current efuse section data. */
  void efuse_WordEnableDataRead(u8 word_en, u8 *sourdata, u8 *targetdata)
  {
  	if (!(word_en & BIT(0))) {
  		targetdata[0] = sourdata[0];
  		targetdata[1] = sourdata[1];
  	}
  	if (!(word_en & BIT(1))) {
  		targetdata[2] = sourdata[2];
  		targetdata[3] = sourdata[3];
  	}
  	if (!(word_en & BIT(2))) {
  		targetdata[4] = sourdata[4];
  		targetdata[5] = sourdata[5];
  	}
  	if (!(word_en & BIT(3))) {
  		targetdata[6] = sourdata[6];
  		targetdata[7] = sourdata[7];
  	}
  }
  
  /* Read All Efuse content */
  static void Efuse_ReadAllMap(struct adapter *pAdapter, u8 efuseType, u8 *Efuse)
  {
  	efuse_power_switch(pAdapter, false, true);
  
  	efuse_ReadEFuse(pAdapter, efuseType, 0, EFUSE_MAP_LEN_88E, Efuse);
  
  	efuse_power_switch(pAdapter, false, false);
  }
  
  /* Transfer current EFUSE content to shadow init and modify map. */
  void EFUSE_ShadowMapUpdate(struct adapter *pAdapter, u8 efuseType)
  {
  	struct eeprom_priv *pEEPROM = GET_EEPROM_EFUSE_PRIV(pAdapter);
  
  	if (pEEPROM->bautoload_fail_flag)
  		memset(pEEPROM->efuse_eeprom_data, 0xFF, EFUSE_MAP_LEN_88E);
  	else
  		Efuse_ReadAllMap(pAdapter, efuseType, pEEPROM->efuse_eeprom_data);
  }
  